Vulcanizer



S. J.- HURWITZ.

VULCANIZER.

APPLICATION FILED DEC. 29' I919.

Patanted'Nov. 9,1920.

2 SHEETS-SHEET I.

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UNITED STATES P TENr OFF-ICE.

SAMUEL J. HUnwrTz, or YoUnes'rown', OHIO.

VULGANIZER.

Specificationv of Letters Patent.

Patented Nov. 9, 1920.

Application filed December 29, 1919. Serial No. 348,144.

To all whom it may concern Be it known that I, SAMUEL J. HURWITZ, a citizen of Russia residing at Youngstown,

in the county of Mahoning and State of Ohio, have invented new and useful Improvements in Vulcanizers, of which the following is a specification.

The object of my present invention is the provision of a compact, easily manipulated and highly efficient electrical device, "de- Figs. 4 to 9 are detail views bi inging outcertaln features of the construction hereinafter explicitly alluded to.

Similar numerals of reference designate corresponding parts in all'of the views of the drawings.

I prefer to have my vulcanizer comprise two members 1 and 2, and I also prefer to cast each of the said members of metal, or of some suitable alloy. Included in the member 1 is a central hollow body portion 3, best shown in Figs. 1, 2, 4 and 6, and arms 4, integral with and reaching 1n opposite directions from the body 3 one of the said arms 4 being provided adyacent to its outer end with an aperture; and the other arm 4 having in its outer end a bifurcation 5. The hollow body 3 of the memher 1 is open at one side, as appears in Figs.

4 and 5. .The member 24's best shown in Figs. 3, 7 8 and 9, and by companson of said figures, it will be understood as including an annularbody portion 6 and arms 7 reaching in o osite directions from the body 6 and in gral therewith. -At thelr outer ends the arms 7 are bifurcated, as mdicated by 8, and provided with transverse apertures 9, and by reference F1gs. 2 and 3, it will be understood that plvoted 1n the bifurcated portions 8 are'the terminals 10 of longitudinally swinging threaded bolts 11 on which are stops 12 adapted to brmg up against the member 1 wlth a new to pocket is the depresse limiting the inward movements of the members 1 and 2 relatively to each other. The bolts 11 are ,removably arranged in the bifurcatlons, respectively, of the arms 4, and

are equipped. with wing-nuts 13 to provide the necessary pressure. The said wingnuts 13 are readily removable, and the member 1 is susceptible of being. reversed on the bolts 11. It will also-boa parent that while designed more particularly for use in assoclation, each of the members -1 and 2 is ently of the other.

' By comparlson of Figs. 4, 5 and. 6 the hollow body 3 of the, member 1 will be adapted to be used to advantage independunderstood as containing the following elements, viz: an insulating layer 14, preferably of mica, in'sulatin layers 14 at right angles to the layer 14, igs. 5 and 6, an 1nsulatmg body 15, preferably of some appropriate plastic insulating material conduct1ve strlps 16, conductive plates 1 and 18, and a resistance coil 19. The layer 14 is superimposed upon the bottom of the body 3, and immediately above the said layer 14 are the conductive strips 16, the inner portions of which are bent upon themselves to afford strong bearings for connecting screws 20, and the outer ends of which are angularly disposed, as indicated b 21, and are opposed to the layers 14 for t e passage of connecting screws 22, which also extend through insulating bushings 23, and are designed to be electrically connected with the opposite lpoles of the source of electrical energy. he body 15 is provided with a central pocket 24, and dis osed snugly in said portion of the conductive plate 17 which is preferably ofcop- 'per; the screws 20 being carried through comparatively large apertures in the plate 17 and. also through one or more insulating layers 25, and serving for the connection of the terminals of the resistance coil 19. The

plate 18 is also preferably of copper, andis provided, by preference, with a curvilinear centralportion desi ned to lend itself to the curvature of the tu e or casing to be acted on.-1As'best'shown in Fig. 4, the conductive plates 17 and 18 "are connected together and .to the body 3 by screws 26, so that when the said screws arere noved, accessmay be readily gained to tlle resistance coil 19 and the chamber. in which the same is disposed. At this point I would have it understood that it-is within the purview of my invention to fill the chamber containing the resistance coil with oil, with a view to contributing to the adequate heating of the plate 18, though I have deemed it unnecessary to illustrate the said oil.

Bridging the annular body 6 of the member 2, as best shown in Figs. 3 and 8, is a diametrical bar 30 that is connected to said body 6 through the medium of screws 31, and pivotally connected at 32 to the said bar 30 is the rockable member of my im-' provement, so denominated because of its capacity to rock and thereby accommodate itself to the particular surface to which it is opposed. The said rockable member, numbered 33, is hollow, and is equipped in a generally similar manner to the bod .3 of the member l-z'. 6., contains-an insu ating strip 34:, of mica or other insulating material, a body 35 of insulating material, conductive strips 36, conductive plates 37 and 38, preferably of copper, and a resistance coil 39, the said resistance coil being arranged in a chamber formed between the plates 37 and 38, and being connected by screws 39 with the conductive strips 36,

which are connected, in turn, to screws 40, adapted for electrical connection with the opposite poles of a source of electrical en-,

ergy. Manifestly when desired the chamber containing the resistance coil 39 may be filled with oil or equivalent substance for the purpose hereinb'efore referred'to with ref- .erence to the'chamber containing the resistance coil 19.- As appears in Figs. 8 and 9, one or more strips of insulating materialis interposed between the plate 37 at the bottom of the chamber and the resistance coil 39. Y

. It will be apparent from the foregoing that my novel vulcanizing device is susceptible of ready manipulation in practice, and

I the member 1 may be arranged -'with its plate 18 opposed to the plate 38 of the rockable member '33; or said member 1 may be reversed and ,arranged with its flat side 40 opposite to the plate 38 of the rock-' able member, according to the character of the vulcanizing to be accomplished. It will further be apparent that my v novel vulcanizer is exceedingly strong and durable, and that when it is desired to put th same into use, it is simply necessary as a condition precedent to electrically connect the resistance coils with the poles of asource of electrical energy.

As before indicated, the members of my novel device are, when occasion demands, adapted to be disassociated, and each used independently of the other.

Having described my invention, what I claim and desire to secure by Letters-Patent, is: i a

1. The combination in a vulcanizer, of a hollow body, a body of insulating material arranged in said hollow body and having) a first-named body, inner and outer heat conductive plates opposed to the said bodies, and the inner conductive late conforming to said depression where y a chamber is formed between the plates, a resistance coil disposed in said chamber and electrically connected with said conductive strips, and means connected to the conductive strips and extending exteriorly of the body for electrical connection with a source of electrical energy.

2. The combination in a vulcanizer, of a body containinga chamber the exposed wall of which is of heat conductive material, a resistance coil in said chamber, and means connected with the resistance coil and extending to the exterior of the body for the connection of the resistance coil with the opposite poles of a source of electrical en'- erg the'said chamber being charged with substance adapted to 'conduce to the heating of the said exposed wall.

3. In a vulcanizer, the combination of a hollow body, a body of insulatin material arranged therein and having a epression, conductive strips interposed between the bottom of the first-named body and the second-named bodyj, insulating material arranged to isolate said conductive strips from the first-named .body, means connected to the conductive strips and extending outside the body for the connection of said strips to the opposite poles of a source of electrical energy, inner and outer heat conductive plates, the inner plate'conforming to said depressionwhereby a chamber is formed between the plates, a resistance coil in the chamber, and means electrically connecting said resistance coil and the conductive strips.

4. In a vulcanizer, the-combination of a hollow'body, a body-of-insulatin material arranged therein and havin a ep re ssion, conductive strips interposed bet bottom of the first-named body and the second-named body, insulating material arranged to isolate said conductive strips from the first-named body, means connected to the conductive strips and extending outside the body for the connection of said strips to the opposite poles vof a source of electrical energy, inner and outer heat conductive plates, the inner plate conforming to said depression whereby a, chamber is formed between the plates, 'a resistance coil in the chamber, and screws connecting the resistance coil and the conductive strips; the said strips being bent upon themselves to afford increased'thiclmesses to receive and ween the body and the other member carrying a rockable member including a hollow body, and each of the said hollow bodies having a chamber and a heat conductive plate forming one wall of the chamber, resistance coils arranged in said chambers and insulated from said bodies, means connected to the resistance coils and extending outside the bodies for the electrical connection of the resistance coils With a source of electrical 10 energy, and means adjustably and detachably connecting the .two first-named members together.

In testimony whereof I afiix my signature.

SAMUEL J. HURWI'TZ. 

